"Finally. If you were into a Sequence Rumbas, there are many of them, The Queen of Hearts is one. They all start LF forward on beat one."

Not officially they don't. The scripts and competitions are all danced using the normal international timing of 2,3,4-1.When danced socially however they are almost universally danced 1,2,3-4. Part of the reason is the music used for sequence dancing. This usually has a very definite 'dance on 1' feel. The same applies to sequence cha cha too, danced 1,2,3&4, which incidentally is the timing used on the original "Wheels" played by Joe Loss 50 years ago.